Watch Alpha Dog (2006) HD Full Movie Free on SolarMovie. Watch Alpha Dog (2006) online free. Johnny and his pals kidnap Jake's 15-year-old brother Zach, then assign his buddy Frankie to be Zach...Johnny and his pals kidnap Jake's 15-year-old brother Zach, then assign his buddy Frankie to be Zach's minder. They develop a brotherly friendship. Zach parties with his captors as things begin to spin out of control.